NSTEPS - Number Steps


Starting from point (0,0) on a plane, we have written all non-negative integers 0, 1, 2,... as shown in the figure. For example, 1, 2, and 3 has been written at points (1,1), (2,0), and (3, 1) respectively and this pattern has continued.

 

Illustration



You are to write a program that reads the coordinates of a point (x, y), and writes the number (if any) that has been written at that point. (x, y) coordinates in the input are in the range 0...10000.

 

Input

The first line of the input is N, the number of test cases for this problem. In each of the N following lines, there is x, and y representing the coordinates (x, y) of a point.

 

Output

For each point in the input, write the number written at that point or write No Number if there is none.

 

Example

Input:
3
4 2
6 6
3 4

Output:
6
12
No Number

hide comments
yvn: 2014-01-11 17:55:24

help me out m gettng rite output but runtime error wats dat??

Prashant Kumar: 2013-12-18 20:27:34

i get the logic, but getting wa , why?

Ankit Jain: 2013-12-09 23:17:54

ac in 1 go...yayyy

Ashish Mishra: 2013-11-27 09:24:55

wrong answer bt working in ideone :(

Shashank Gupta: 2013-11-10 06:34:46

Only 17 lines of C...I was forgetting return 0 so I thought I did something wrong. :P

Arpit Uppal: 2013-08-28 15:44:25

damn easy.. my 50th classical on spoj :)

GAURANGA: 2013-08-11 17:45:35

most easy...remembr y cordinate cannot exceed x cordinate

Amitayush Thakur: 2013-07-26 05:35:44

Time limit should be reduce to 0.05 secs or else this question should be moved to tutorial.Just too easy to do :D

rishi: 2013-06-15 12:33:33

no number should be printed exactly as specified...threw WA at me just for lower case!

Divya Gupta: 2013-03-20 22:24:23

why wa always;


Added by:Camilo Andrés Varela León
Date:2006-11-25
Time limit:1.159s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ERL JS NODEJS PERL 6 VB.net
Resource:Asia - Tehran 2000